base64-const 0.0.6

Base64 encode/decode with const-friendly decode and URL-safe macros
Documentation
# base64-const

Base64 encode/decode with compile-time-friendly macros.

## Features

- Runtime `encode` / `decode`
- Const `base64_decode!` for compile-time decoding
- URL-safe helpers and macros (`base64_url_safe!`, `base64_url_unsafe!`)

## Example

```rust
use base64_const::{encode, decode, base64_decode};

let encoded = encode(b"Ma");
assert_eq!(encoded, "TWE=");
assert_eq!(decode(b"TWE=").as_ref(), b"Ma");

const DECODED: &[u8] = &base64_decode!("TWE=");
assert_eq!(DECODED, b"Ma");
```

## License

Licensed under either of Apache License, Version 2.0 or MIT license, at your option.